diff --git a/a8/reflect.h b/a8/reflect.h
index ceea6c2..2c822cc 100644
--- a/a8/reflect.h
+++ b/a8/reflect.h
@@ -1,9 +1,21 @@
 #pragma once
 
+#include <assert.h>
 #include <type_traits>
 
 namespace a8
 {
+
+    namespace reflect
+    {
+        class Class;
+    }
+
+    struct ReflectibleObject
+    {
+        a8::reflect::Class *metaclass = NULL;
+    };
+
     namespace reflect
     {
 
@@ -13,10 +25,11 @@ namespace a8
            ET_UINT32 = 2,
            ET_INT64 = 3,
            ET_UINT64 = 4,
-           ET_DOUBLE = 5,
-           ET_STRING = 6,
-           ET_CLASS = 7,
-           ET_INTERFACE = 8,
+           ET_FLOAT = 5,
+           ET_DOUBLE = 6,
+           ET_STRING = 7,
+           ET_CLASS = 8,
+           ET_INTERFACE = 9,
         };
 
         enum FieldSubType
@@ -80,6 +93,26 @@ namespace a8
                 return tag_;
             }
 
+            void SetSimpleField(
+                                int fieldidx,
+                                const char* fieldname,
+                                int type,
+                                int offset
+                                )
+            {
+                SetField(fieldidx,
+                         fieldname,
+                         type,
+                         a8::reflect::EST_SIMPLE,
+                         offset,
+                         nullptr,
+                         nullptr,
+                         nullptr,
+                         nullptr,
+                         nullptr,
+                         nullptr);
+            }
+
             void SetField(int fieldidx,
                           const char* fieldname,
                           int type,
@@ -197,7 +230,7 @@ namespace a8
 
 #define BEGIN_MSG_CLASS(classname, fieldnum)                            \
     {                                                                   \
-    a8::reflect::Class *metaclass = new a8::reflect::Class(#classname, fieldnum, classname::CLSID); \
+    a8::reflect::Class *metaclass = new a8::reflect::Class(#classname, fieldnum, 0); \
     metaclass->create =&a8::reflect::_create<classname>;               \
     metaclass->destroy =&a8::reflect::_destroy<classname>;             \
     metaclass->copy =&a8::reflect::_copy<classname>;                   \
@@ -209,13 +242,13 @@ namespace a8
 
 #define BEGIN_MFMSG_CLASS(classname, fieldnum)                          \
     {                                                                   \
-    a8::reflect::Class *metaclass = new a8::reflect::Class(#classname, fieldnum, classname::CLSID); \
+    a8::reflect::Class *metaclass = new a8::reflect::Class(#classname, fieldnum, 0); \
     metaclass->create =&a8::reflect::_create<classname>;               \
     metaclass->destroy =&a8::reflect::_destroy<classname>;             \
     metaclass->copy =&a8::reflect::_copy<classname>;                   \
-    classname::__metaclass = metaclass;                                 \
-    assert(classname::CLSID < 1024);                                    \
-    s_mfclass_metaclasses[classname::CLSID] = metaclass;                \
+    /*classname::__metaclass = metaclass;*/                             \
+    /*assert(classname::CLSID < 1024);*/                                \
+    /*s_mfclass_metaclasses[0] = metaclass;*/                           \
     classname p;
 
 #define END_MFMSG_CLASS()                       \
diff --git a/a8/types.h b/a8/types.h
index 6678723..21d1ca9 100644
--- a/a8/types.h
+++ b/a8/types.h
@@ -40,4 +40,8 @@ namespace a8
     const int TIMER_DESTORY_EVENT = 3;
     const int TIMER_USER_EVENT = 66;
 
+    namespace reflect
+    {
+        class Class;
+    }
 };